diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c b/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c new file mode 100644 index 000000000000..74919491675f --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c @@ -0,0 +1,254 @@ +/* + * Copyright 2022 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ +#include "link_hwss_hpo_dp.h" +#include "dm_helpers.h" +#include "core_types.h" +#include "dccg.h" +#include "dc_link_dp.h" + +static enum phyd32clk_clock_source get_phyd32clk_src(struct dc_link *link) +{ + switch (link->link_enc->transmitter) { + case TRANSMITTER_UNIPHY_A: + return PHYD32CLKA; + case TRANSMITTER_UNIPHY_B: + return PHYD32CLKB; + case TRANSMITTER_UNIPHY_C: + return PHYD32CLKC; + case TRANSMITTER_UNIPHY_D: + return PHYD32CLKD; + case TRANSMITTER_UNIPHY_E: + return PHYD32CLKE; + default: + return PHYD32CLKA; + } +} + +static void set_hpo_dp_throttled_vcp_size(struct pipe_ctx *pipe_ctx, + struct fixed31_32 throttled_vcp_size) +{ + struct hpo_dp_stream_encoder *hpo_dp_stream_encoder = + pipe_ctx->stream_res.hpo_dp_stream_enc; + struct hpo_dp_link_encoder *hpo_dp_link_encoder = + pipe_ctx->link_res.hpo_dp_link_enc; + + hpo_dp_link_encoder->funcs->set_throttled_vcp_size(hpo_dp_link_encoder, + hpo_dp_stream_encoder->inst, + throttled_vcp_size); +} + +static void set_hpo_dp_hblank_min_symbol_width(struct pipe_ctx *pipe_ctx, + const struct dc_link_settings *link_settings, + struct fixed31_32 throttled_vcp_size) +{ + struct hpo_dp_stream_encoder *hpo_dp_stream_encoder = + pipe_ctx->stream_res.hpo_dp_stream_enc; + struct dc_crtc_timing *timing = &pipe_ctx->stream->timing; + struct fixed31_32 h_blank_in_ms, time_slot_in_ms, mtp_cnt_per_h_blank; + uint32_t link_bw_in_kbps = + dc_link_bandwidth_kbps(pipe_ctx->stream->link, link_settings); + uint16_t hblank_min_symbol_width = 0; + + if (link_bw_in_kbps > 0) { + h_blank_in_ms = dc_fixpt_div(dc_fixpt_from_int( + timing->h_total - timing->h_addressable), + dc_fixpt_from_fraction(timing->pix_clk_100hz, 10)); + time_slot_in_ms = dc_fixpt_from_fraction(32 * 4, link_bw_in_kbps); + mtp_cnt_per_h_blank = dc_fixpt_div(h_blank_in_ms, + dc_fixpt_mul_int(time_slot_in_ms, 64)); + hblank_min_symbol_width = dc_fixpt_floor( + dc_fixpt_mul(mtp_cnt_per_h_blank, throttled_vcp_size)); + } + + hpo_dp_stream_encoder->funcs->set_hblank_min_symbol_width(hpo_dp_stream_encoder, + hblank_min_symbol_width); +} + +static int get_odm_segment_count(struct pipe_ctx *pipe_ctx) +{ + struct pipe_ctx *odm_pipe = pipe_ctx->next_odm_pipe; + int count = 1; + + while (odm_pipe != NULL) { + count++; + odm_pipe = odm_pipe->next_odm_pipe; + } + + return count; +} + +static void setup_hpo_dp_stream_encoder(struct pipe_ctx *pipe_ctx) +{ + struct dc *dc = pipe_ctx->stream->ctx->dc; + struct hpo_dp_stream_encoder *stream_enc = pipe_ctx->stream_res.hpo_dp_stream_enc; + struct hpo_dp_link_encoder *link_enc = pipe_ctx->link_res.hpo_dp_link_enc; + struct dccg *dccg = dc->res_pool->dccg; + struct timing_generator *tg = pipe_ctx->stream_res.tg; + int odm_segment_count = get_odm_segment_count(pipe_ctx); + enum phyd32clk_clock_source phyd32clk = get_phyd32clk_src(pipe_ctx->stream->link); + + dccg->funcs->set_dpstreamclk(dccg, DTBCLK0, tg->inst); + dccg->funcs->enable_symclk32_se(dccg, stream_enc->inst, phyd32clk); + dccg->funcs->set_dtbclk_dto(dccg, tg->inst, pipe_ctx->stream->phy_pix_clk, + odm_segment_count, + &pipe_ctx->stream->timing); + stream_enc->funcs->enable_stream(stream_enc); + stream_enc->funcs->map_stream_to_link(stream_enc, stream_enc->inst, link_enc->inst); +} + +static void reset_hpo_dp_stream_encoder(struct pipe_ctx *pipe_ctx) +{ + struct dc *dc = pipe_ctx->stream->ctx->dc; + struct hpo_dp_stream_encoder *stream_enc = pipe_ctx->stream_res.hpo_dp_stream_enc; + struct dccg *dccg = dc->res_pool->dccg; + struct timing_generator *tg = pipe_ctx->stream_res.tg; + + stream_enc->funcs->disable(stream_enc); + dccg->funcs->set_dtbclk_dto(dccg, tg->inst, 0, 0, &pipe_ctx->stream->timing); + dccg->funcs->disable_symclk32_se(dccg, stream_enc->inst); + dccg->funcs->set_dpstreamclk(dccg, REFCLK, tg->inst); +} + +static void enable_hpo_dp_fpga_link_output(struct dc_link *link, + const struct link_resource *link_res, + enum signal_type signal, + enum clock_source_id clock_source, + const struct dc_link_settings *link_settings) +{ + const struct dc *dc = link->dc; + enum phyd32clk_clock_source phyd32clk = get_phyd32clk_src(link); + int phyd32clk_freq_khz = link_settings->link_rate == LINK_RATE_UHBR10 ? 312500 : + link_settings->link_rate == LINK_RATE_UHBR13_5 ? 412875 : + link_settings->link_rate == LINK_RATE_UHBR20 ? 625000 : 0; + + dm_set_phyd32clk(dc->ctx, phyd32clk_freq_khz); + dc->res_pool->dccg->funcs->set_physymclk( + dc->res_pool->dccg, + link->link_enc_hw_inst, + PHYSYMCLK_FORCE_SRC_PHYD32CLK, + true); + dc->res_pool->dccg->funcs->enable_symclk32_le( + dc->res_pool->dccg, + link_res->hpo_dp_link_enc->inst, + phyd32clk); + link_res->hpo_dp_link_enc->funcs->link_enable( + link_res->hpo_dp_link_enc, + link_settings->lane_count); + +} + +static void enable_hpo_dp_link_output(struct dc_link *link, + const struct link_resource *link_res, + enum signal_type signal, + enum clock_source_id clock_source, + const struct dc_link_settings *link_settings) +{ + if (IS_FPGA_MAXIMUS_DC(link->dc->ctx->dce_environment)) + enable_hpo_dp_fpga_link_output(link, link_res, signal, + clock_source, link_settings); + else + link_res->hpo_dp_link_enc->funcs->enable_link_phy( + link_res->hpo_dp_link_enc, + link_settings, + link->link_enc->transmitter, + link->link_enc->hpd_source); +} + + +static void disable_hpo_dp_fpga_link_output(struct dc_link *link, + const struct link_resource *link_res, + enum signal_type signal) +{ + const struct dc *dc = link->dc; + + link_res->hpo_dp_link_enc->funcs->link_disable(link_res->hpo_dp_link_enc); + dc->res_pool->dccg->funcs->disable_symclk32_le( + dc->res_pool->dccg, + link_res->hpo_dp_link_enc->inst); + dc->res_pool->dccg->funcs->set_physymclk( + dc->res_pool->dccg, + link->link_enc_hw_inst, + PHYSYMCLK_FORCE_SRC_SYMCLK, + false); + dm_set_phyd32clk(dc->ctx, 0); +} + +static void disable_hpo_dp_link_output(struct dc_link *link, + const struct link_resource *link_res, + enum signal_type signal) +{ + if (IS_FPGA_MAXIMUS_DC(link->dc->ctx->dce_environment)) { + disable_hpo_dp_fpga_link_output(link, link_res, signal); + } else { + link_res->hpo_dp_link_enc->funcs->link_disable(link_res->hpo_dp_link_enc); + link_res->hpo_dp_link_enc->funcs->disable_link_phy( + link_res->hpo_dp_link_enc, signal); + } +} + +static void set_hpo_dp_link_test_pattern(struct dc_link *link, + const struct link_resource *link_res, + struct encoder_set_dp_phy_pattern_param *tp_params) +{ + link_res->hpo_dp_link_enc->funcs->set_link_test_pattern( + link_res->hpo_dp_link_enc, tp_params); + dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_SET_SOURCE_PATTERN); +} + +static void set_hpo_dp_lane_settings(struct dc_link *link, + const struct link_resource *link_res, + const struct dc_link_settings *link_settings, + const struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX]) +{ + link_res->hpo_dp_link_enc->funcs->set_ffe( + link_res->hpo_dp_link_enc, + link_settings, + lane_settings[0].FFE_PRESET.raw); +} + +static const struct link_hwss hpo_dp_link_hwss = { + .setup_stream_encoder = setup_hpo_dp_stream_encoder, + .reset_stream_encoder = reset_hpo_dp_stream_encoder, + .ext = { + .set_throttled_vcp_size = set_hpo_dp_throttled_vcp_size, + .set_hblank_min_symbol_width = set_hpo_dp_hblank_min_symbol_width, + .enable_dp_link_output = enable_hpo_dp_link_output, + .disable_dp_link_output = disable_hpo_dp_link_output, + .set_dp_link_test_pattern = set_hpo_dp_link_test_pattern, + .set_dp_lane_settings = set_hpo_dp_lane_settings, + }, +}; + +bool can_use_hpo_dp_link_hwss(const struct dc_link *link, + const struct link_resource *link_res) +{ + return link_res->hpo_dp_link_enc != NULL; +} + +const struct link_hwss *get_hpo_dp_link_hwss(void) +{ + return &hpo_dp_link_hwss; +} + |